Communism easily transitions into National Socialism when their economy fails. They are used to an authoritarian regime so that doesn't change, they just change some of the economic policies.

Just look at China. They have strong nationalism, they are NOT borderless internationalists, they allow nominally free enterprise, but they also strictly control their people's personal lives to make sure they are in line with what the state wants (social credit score for example). They also have a strong one party rule. Fascism is nearly indistinguishable from that system as it stands today.

If you like that sort of system, then OK, but there is no magical third way where you have "All within the state, nothing outside the state, nothing against the state." and don't wind up in a system like that.

Moreover Nazi Germany, as many have pointed out, has many of the same policies like we see today against the Jews of their day. They were first dehumanized and stigmatized with vulgar propaganda. They were shunned from society using state power. They were pushed into ghettos to live in squalor. They were locked into a labor camp prison where they become slaves of the state. Doesn't matter if a Commie or a Nazi does it, same results, those who the state doesn't like for whatever reason get this treatment. Goes back to the Roman Empire, throwing dissidents into the mecury mines to work until they died. Hitler used the Roman salute, isn't that interesting?